function Remove-DbaAgListener {
    <#
    .SYNOPSIS
        Removes availability group listeners from SQL Server instances.

    .DESCRIPTION
        Removes availability group listeners from SQL Server instances, permanently deleting the virtual network name and IP address configuration that clients use to connect to availability group databases. This operation is typically performed during decommissioning, reconfiguration, or when consolidating listeners. Once removed, applications will need to connect directly to individual replicas or use a different listener. The function can target specific listeners by name or remove all listeners from specified availability groups.

    .PARAMETER SqlInstance
        The target SQL Server instance or instances. Server version must be SQL Server version 2012 or higher.

    .PARAMETER SqlCredential
        Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential).

        Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported.

        For MFA support, please use Connect-DbaInstance.

    .PARAMETER Listener
        Specifies the name of specific availability group listeners to remove. Required when using SqlInstance parameter.
        Use this when you need to remove particular listeners rather than all listeners from availability groups.

    .PARAMETER AvailabilityGroup
        Filters listener removal to only those within the specified availability groups.
        Use this when you want to remove listeners from particular AGs while preserving listeners from other availability groups on the same instance.

    .PARAMETER WhatIf
        Shows what would happen if the command were to run. No actions are actually performed.

    .PARAMETER Confirm
        Prompts you for confirmation before executing any changing operations within the command.

    .PARAMETER InputObject
        Accepts availability group listener objects from the pipeline, typically from Get-DbaAgListener.
        Use this when you need to remove listeners that have been filtered or selected through other dbatools commands.

    .PARAMETER EnableException
        By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message.
        This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting.
        Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch.

    .NOTES
        Tags: AG, HA
        Author: Chrissy LeMaire (@cl), netnerds.net

        Website: https://dbatools.io
        Copyright: (c) 2018 by dbatools, licensed under MIT
        License: MIT https://opensource.org/licenses/MIT

    .LINK
        https://dbatools.io/Remove-DbaAgListener

    .EXAMPLE
        PS C:\> Remove-DbaAgListener -SqlInstance sqlserver2012 -AvailabilityGroup ag1, ag2 -Confirm:$false

        Removes the ag1 and ag2 availability groups on sqlserver2012. Does not prompt for confirmation.

    .EXAMPLE
        PS C:\> Get-DbaAvailabilityGroup -SqlInstance sqlserver2012 -AvailabilityGroup availabilitygroup1 | Remove-DbaAgListener

        Removes the listeners returned from the Get-DbaAvailabilityGroup function. Prompts for confirmation.
    #>
    [CmdletBinding(SupportsShouldProcess, ConfirmImpact = 'High')]
    param (
        [DbaInstanceParameter[]]$SqlInstance,
        [PSCredential]$SqlCredential,
        [string[]]$Listener,
        [string[]]$AvailabilityGroup,
        [parameter(ValueFromPipeline)]
        [Microsoft.SqlServer.Management.Smo.AvailabilityGroupListener[]]$InputObject,
        [switch]$EnableException
    )
    process {
        if (Test-Bound -Not SqlInstance, InputObject) {
            Stop-Function -Message "You must supply either -SqlInstance or an Input Object"
            return
        }

        if ((Test-Bound -ParameterName SqlInstance)) {
            if ((Test-Bound -Not -ParameterName Listener)) {
                Stop-Function -Message "You must specify one or more listeners and one or more Availability Groups when using the SqlInstance parameter."
                return
            }
        }

        if ($SqlInstance) {
            $InputObject += Get-DbaAgListener -SqlInstance $SqlInstance -SqlCredential $SqlCredential -Listener $Listener
        }

        foreach ($aglistener in $InputObject) {
            if ($Pscmdlet.ShouldProcess($aglistener.Parent.Parent.Name, "Removing availability group listener $aglistener")) {
                try {
                    $ag = $aglistener.Parent.Name
                    $aglistener.Parent.AvailabilityGroupListeners[$aglistener.Name].Drop()
                    [PSCustomObject]@{
                        ComputerName      = $aglistener.ComputerName
                        InstanceName      = $aglistener.InstanceName
                        SqlInstance       = $aglistener.SqlInstance
                        AvailabilityGroup = $ag
                        Listener          = $aglistener.Name
                        Status            = "Removed"
                    }
                } catch {
                    Stop-Function -Message "Failure" -ErrorRecord $_ -Continue
                }
            }
        }
    }
}